ref: Remove enable_tracing in new major

[sentrivana]

Description

Issues

Reminders

• Please add tests to validate your changes, and lint your code using uv run ruff.
• Add GH Issue ID & Linear ID (if applicable)
• PR title should use conventional commit style (feat:, fix:, ref:, meta:)
• For external contributors: CONTRIBUTING.md, Sentry SDK development docs, Discord community

[github-actions]

Codecov Results 📊

✅ 96723 passed | ⏭️ 6337 skipped | Total: 103060 | Pass Rate: 93.85% | Execution Time: 349m 36s

📊 Comparison with Base Branch

Metric	Change
Total Tests	📉 -2596
Passed Tests	📉 -2155
Failed Tests	📉 -1
Skipped Tests	📉 -440

All tests are passing successfully.

✅ Patch coverage is 100.00%. Project has 2393 uncovered lines.
✅ Project coverage is 89.88%. Comparing base (base) to head (head).

Coverage diff

@@            Coverage Diff             @@
##          main       #PR       +/-##
==========================================
+ Coverage    89.87%    89.88%    +0.01%
==========================================
  Files          193       186        -7
  Lines        24656     23641     -1015
  Branches      8786      8464      -322
==========================================
+ Hits         22158     21248      -910
- Misses        2498      2393      -105
- Partials      1400      1345       -55

---

Generated by Codecov Action